Grease-cup valve



1,625,717 Aprll 19, 1927. A a FAIRCHILBD GREASE CUP VALVE Filed July 14, 1926 INVEHTZLR ATTORNEY Patented Apr. 19, 1.927.

STATES PATET ARTHUR B. FAIR-CHILD, 0F BUI-IL, IDAHO.

GREASE-CUP VALVE.

Application filed July 14, 1926. Serial No. 122,428.

This invention relates to improvements in In Figures 1, 2 and 3. I form openings grease cups, the general object of the invent in the top of the cap 3 and I place a tion being to provide means for preventing washer 5 on the inner face of the top of a vacuum occurring in the cup when the the cap which closes these openings and cup is removed for the purpose of refilling, prevents lubricant from escaping therewhich vacuum tends to draw the lubricant from. A headed stud 6 passes through a from the bearing. central perforation in the top of the cap Another object of the invention is to proand is attached to the washer, as shown vide means whereby the vacuum can be 7. The stud is of suiiicient length to broken when the cup is being removed by space the washer from the inner face of pressure of the fingers or finger on a part the top of the cap when the head of the of the device. stud engages the outer face of the cap, as

This invention also consists in certain shown in Figure 2. Thus it will be seen other features of construction and in the that when the cap is to be withdrawn by combination and arrangement of the several pressing on the head of the stud, the washer parts, to be hereinafter fully described, ilis moved downwardly or inwardly so that lustrated in the accompanying drawings and the air can enter the cap and thus prevent specifically pointed out in the appended any vacuum from occurring therein, which claims. would tend to return the lubricant in the In describing my invention in detail, refbearing to the cap. This washer will preerence will be had to the accompanying vent the escape of lubricant from the cap drawings wherein like characters denote like when the same is being turned down to force 01' corresponding parts throughout the sevlubricant into the bearing, and in most cases cal vie s, and in which the washer will open automatically when Figure l is a sectional view through a a vacuum starts to form in the cup, but if cup which is provided with one form of the it should not, slight pressure on the head invention, Of the stud Will open it.

Figure 2 is a plan view of the cup shown In Figures 4 and 5, the washer 5' is in Figure 1. formed of flexible material so. that the stud Figure 3 is a view similar to Figure 1, 6 holds the central part of the washer snugbut showing the parts in a position to pre- 1y against the top of the cap. This stud vent a vacuum occurring in the cup. also holds in place a clip 8 which is formed Figure is an elevation with parts broken with three arms 9, each of which carries away showing a modification. a pin 10. These pins extend into per- Figure 5 is a plan view of this modificaforations 4: formed in the top of the cap. @1 11, Thus by pressing upon any one of these In these views, 1 indicates the base part arms, the pin thereon will be pressed against of the cup which is formed with a nipple 2 the washer to force a portion thereof away so that it can be screwed into a threaded from the top of the cap so that air can hole formed in the bearing. The eompresenter the cap. sion cap is shown at 3, and has its internal It is thought from the foregoing descripthreads engaging the external threads of tion that the advantages and novel features the base part 1. Thus as the cap is screwed of my invention will be readily apparent. down on the base 1, the lubricant therein I desire it to be understood that I may will be forced therefrom into the bearing. make changes in the construction and in As before stated, when the device is removed the combination and arrangement of the for refilling purposes, a suction is created several parts, provided that such changes within the device which has a tendency to fall within the scope of the appended claims. cause the lubricant in the bearing to return WVhat I claim is: to the cup, and it is the object of my inl. A grease cup having perforations in vention to prevent this. the end of its cap, a washer closing the permounted therein with its inner end his tened to the Washer so that the washer can be moved away from the perforations to permit air to enter the cap by puslling the stud inwardly.

In testimony whereof I affix my signature.

ARTHUR B. FAIRCHILD. 

